i need a car that only goes forward and without remote control for a science fair

I need a car that supports fast charging

How do the battery voltage and performance compare between a store-bought car and a homemade car using the same type of battery?4.5v - 12v and only goes foward and is a good car to fit my testable question

im making my own buying my own things, and i just need a manufactured store bought car that works the same as an extreme homemade one and put those things on the right so i can see them

not those lmao i need a toy car the size of a remote control one but only goes forward thats is

not a riding sit inside one

the secocnd option uses a pgsh forward motion but something like that only with a motor is what i am looking for How do the battery voltage and performance compare between a store-bought car and a homemade car using the same type of battery?4.5v - 12v and only goes foward and is a good car to fit my testable question

thats a push car i need a car with a motor and its wheel spins when u turn ist on all the way until u turn it off thats it or it runs out of battery

how can like 5 1.5 v batteries run a whole mini car!??!?!

no like the one on the right