The Motor Shield is a perfect platform for robotics and mechanical applications. It enables the Arduino to drive two brushed DC motors or one 4-wire two-phase stepper motor. Based on the H-bridge...

Specifications:   Control System: +Pulse Width Control 1500usec Neutral Operating Voltage: 4.8-6.0 Volts Operating Temperature Range: 0 to +60 Degree Operating Speed (4.8V): 0.14sec/60° at...

A pair of rubber tires of diameters 2.5" and a pair of gearmotors (100:1).

Servo has three wires: Brown, Red and Orange.   Brown is GND, Red is VCC, and should be connected to +5V, Orange is the control signal, which is PWM signal.   Note: Don't power your servo from USB...

This is a solar and/or battery powered speedy racing car kit. 

This LinkSprite DC motor driver board uses one L298N, and can control two motors.  The  LinkSprite DC motor driver uses L29