This is a well designed for Arduino mobile robot development car kit platform. You can build it and program it easily with tons of published free codes. The high-strength body provides flexibility in rapid movement particularly in outdoor grass, gravel, sand or sloped surface. You  can also mount a variety of sensors to make it more interesting.

Features:

• Brand new bluetooth controlled robot car kits compatible for Arduino
• Made of high quality material
• Allows build it and program it easily with tons of published free codes
• Open your imagination, enjoy assembling pleasure
• Great robot car assembly kit for Arduino lovers

Specifications:

• Remote Control Range: 10m
• Material: PCB
• Color: Yellow + Black
• Package Dimension: 292*172*192mm
• Weight: 1183g

Package includes:
4 x Geared motor     
4 x Tire
4 x Motor fixing
2 x 100 x 213 x 5mm acrylic glass plate
1 x L298N motor driver
1 x for Arduino sensor board
1 x Holder kit
1 x Steering gear
1 x Ultrasonic module
3 x Line inductive module
1 x Infrared receiver module
1 x MCU remote control
1 x 18650 battery holder
2 x 18650 battery
1 x 18650 battery charger (AC 100~240V / 2-flat-pin plug)
1 x Bluetooth adapter
40 x Dupont line
1 x USB cable (100cm)
13 x Copper pillar (6 x 35mm / 7 x 6mm)
1 x 3mm screws kit