This is the follow up Arduino project that built on the first version. Because the 433Mhz RF chip has short range issue and the data is frequently dropped, this project is to choose a better reliable radio frequency module to replace it. 2.4GHz nRF24L01 is a very popular choice. Amazon sells a pair with long antennas that enable long range wirless communication.
Diagram 1: The remote control board with the nRF24L01 transmitter.
Diagram 1: The three wheel toy car with the nRF24L01 receiver.