Re-upload without background music or old film look since many of you didn’t like those. Better now? I also edited it a bit longer. The build is a radio-controlled Lego tank (or a self propelled gun?, idk) that launches Lego soccer balls (= Lego GBC balls) using a rubber band powered gun.

Tank specs:
Wheels: 12
Motors: 5x Lego XL motor, 2x Lego M motor
Batteries: 2x Lego Power Functions Battery box
Weight: 1850 grams
Ammo magazine capacity: 6
Ammo: Sports Soccer Ball Plain x45 https://www.bricklink.com/v2/catalog/catalogitem.page?P=x45
Rubber band: Theraband Gold https://www.amazon.co.uk/dp/B00GUIU6BY
Remote control:
2x SBrick https://www.sbrick.com/store
BrickController 2 app (Android) https://play.google.com/store/apps/details?id=com.scn.BrickController2
PlayStation 4 wireless controller
Controls:
Left Stick: Left wheels forward/backward
Right Stick: Right wheels forward/backward
D-Pad: Gun up/down
Action buttons: Gun draw/unwind, Gun ammo insert and lock/release

Part list:
2x SBrick
1x PlayStation 4 wireless controller
1x Android device (e.g. phone or tablet) for running BrickController 2 app
1x Theraband Gold sheet (cut into two 190×7 mm stripes)
1x office rubber band (size 60 mm)
2x furniture pad
1x thin and strong string (length 30 cm), e.g. Westline Dyneema 50
6x Sports Soccer Ball Plain [x45]
2x Power Functions Battery Box [8881-1]
5x Power Functions XL-Motor [8882-1]
1x Power Functions M-Motor [8883-1]
2x Power Functions Extension Wire (20cm) [8886-1]
2x Technic, Linear Actuator [61927c01]
1x Technic, Linear Actuator Mini [92693c01]
130x Technic, Link Tread Wide with Two Pin Holes [57518]
4x Technic Tread Sprocket Wheel Extra Large [42529]
8x Technic Tread Sprocket Wheel Large [57519]
10x Technic, Shock Absorber 6.5L – Hard Spring [731c04]
20x Technic, Brick 1 x 16 with Holes [3703]
2x Technic, Brick 1 x 8 with Holes [3702]
2x Technic, Brick 1 x 6 with Holes [3894]
2x Technic, Brick 1 x 2 with Hole [3700]
6x Technic, Panel Plate 5 x 11 x 1 [64782]
14x Plate 1 x 12 [60479]
18x Plate 1 x 10 [4477]
10x Plate 1 x 8 [3460]
4x Plate 1 x 6 [3666]
12x Tile 1 x 8 [4162]
4x Tile 1 x 6 [6636]
4x Tile 1 x 4 [2431
18x Technic, Liftarm 1 x 15 Thick [32278]
11x Technic, Liftarm 1 x 11.5 Double Bent Thick [32009]
4x Technic, Liftarm 1 x 11 Thick [32525]
4x Technic, Liftarm 1 x 9 Bent (6 – 4) Thick [6629]
5x Technic, Liftarm 1 x 9 Thick [40490]
6x Technic, Liftarm 5 x 7 Open Center Frame Thick [64179]
8x Technic, Liftarm 1 x 7 Thick [32524]
2x Technic, Liftarm 1 x 5 Thick [32316]
3x Technic, Liftarm 3 x 5 L-Shape with Quarter Ellipse Thin [32250]
30x Technic, Liftarm 3 x 5 L-Shape Thick [32526]
10x Technic, Liftarm 2 x 4 L-Shape Thick [32140]
10x Technic, Liftarm 3 x 3 L-Shape Thin [32056]
1x Technic, Liftarm 1 x 3 with 2 Axle Holes and Pin / Crank [33299]
9x Technic, Liftarm 1 x 3 Thick [32523]
7x Technic, Liftarm 1 x 2 Thick with Pin Hole and Axle Hole [60483]
6x Technic, Liftarm 1 x 2 Thin [41677]
6x Technic, Pin Connector Perpendicular 3 x 3 Bent with 4 Pins [55615]
2x Technic, Pin Connector Perpendicular 3L with 4 Pins [48989]
2x Technic, Pin Connector Perpendicular Double 3L [32557]
4x Technic, Pin Connector Round 2L with Slot (Pin Joiner Round) [62462]
1x Technic, Pin Connector Round 2/3 L [18654]
2x Technic, Axle and Pin Connector Perpendicular Triple [63869]
1x Technic, Axle and Pin Connector Perpendicular Split [92907]
1x Technic, Axle and Pin Connector Perpendicular Double Split [41678]
4x Technic, Axle and Pin Connector Perpendicular 3L with Center Pin Hole [32184]
4x Technic, Axle and Pin Connector Perpendicular 3L with 2 Pin Holes [42003]
2x Technic, Axle and Pin Connector Perpendicular [6536]
1x Technic, Axle 16 [50451]
2x Technic, Axle 12 [3708]
1x Technic, Axle 10 [3737]
5x Technic, Axle 8 [3707]
1x Technic, Axle 7 [44294]
12x Technic, Axle 6 [3706]
3x Technic, Axle 5 [32073]
12x Technic, Axle 4 with Stop [87083]
2x Technic, Axle 4 [3705]
4x Technic, Axle 3 [4519]
3x Technic, Axle 2 [3704]
1x Technic, Universal Joint 3L [62520c01]
1x Technic, Reel 3 x 2 [32012]
2x Technic, Gear 24 Tooth (2nd Version – 1 Axle Hole) [3648]
1x Technic, Gear 20 Tooth Bevel [32198]
2x Technic, Gear 16 Tooth (Second Version – Reinforced) [94925]
1x Technic, Gear 12 Tooth Bevel [6589]
3x Technic, Gear 8 Tooth [3647]
18x Technic, Bush [3713]
24x Technic, Bush 1/2 Smooth [4265c]
27x Technic, Bush 1/2 Toothed Type I [4265a]
2x Technic, Pole Reverser Handle / Axle Connector [6553]
22x Technic, Pin with Friction Ridges Lengthwise and Pin Hole [15100]
2x Technic, Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle [18651]
2x Technic, Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle [11214]
60x Technic, Pin 3L with Friction Ridges Lengthwise [6558]
150x Technic, Pin with Friction Ridges Lengthwise [2780]
24x Technic, Axle Pin with Friction Ridges Lengthwise [43093]
1x Technic, Axle Pin without Friction Ridges Lengthwise [3749]
3x Technic, Pin 3/4 [32002]