The TC4 Club Racer is an excellent platform for Spec Class racing, drifting and for racers who want to try on-road racing without breaking the bank. The TC4 Club Racer's pre-built chassis includes all of the features you would expect from Team Associated, and is ready to accept most 1:10 scale touring, VTA, and drift car bodies, and 1:10 wheels, tires and electronics. Build your dream car with the many Factory Team accessories and upgrade parts now available. Read more and see photos via the source link. Source: http://www.teamassociated.com/cars_and_trucks/TC4/Club_Racer/
I agree. I had a Traxxas Velineon system in our TC4 for a while and it ran really well on 7.2 volt NiMh batteries. If we make a class for 1/10 scale on-road I suppose we will all have to run the same battery types.
GPS- maybe get them as close as possible, until the interest grows. For starters ,"run what you brung", might be the only way to get a field of cars.