Pretty much any name brand radio(futaba/sanwa/ko) will go up to a 1/4 mile, which is waaaaaaayyyyy further than you can see your car clearly. So really, range is the least of your worries.

How you mount your antenna is also critical at longer distances, as is receiver placement. Placing the receiver away from other electronics and mounting your antenna vertically with an antenna tube should give you the best range.





p.s Lower frequencies are less prone to interference/have better range because they have a larger wavelength, which allows the waves to go around objects. But everyone is on 2.4 GHz nowadays anyway, so no worries.