The listing at the link I posted for the TC4 details everything else that's required.

To expand on that for you, you will still need:

*A body of your choice (190mm electric touring car)
Wheels and tires of your choice (rubber for parking lots and the street, foam for the track)
*A motor and ESC (electronic speed control) combo. You should probably go for a motor between 6000 and 8000kv, and a 60A capable speed control. If you bought a lower kv motor, say 3000-4000, you could probably get away with a 40A speed control. ESCs for on-road touring cars should be SENSORED. If you need recommendations in this area, just let me know.
*A radio set if you don't already have one. This needs to comprise:
** A Transmitter that has at minimum the settings; EPA (End Point Adjustment), trim and channel reverse. This radio is excellent for very cheap... http://www.hobbypartz.com/79p-gt3b-carradio-lcd.html
** A reciever compatible with the transmitter (included with the radio above)
** A servo for steering (here is a good and economical choice... http://www3.towerhobbies.com/cgi-bin...&I=LXUZ87&P=ML)
* A 2S lipo battery (there are many good and cheap ones at the site I linked for the radio above, you should use at least 4000mAh and at least 25C rated batteries.
* A charger for lipo technology - again this is available at the shop I linked above for very cheap. The Thunder AC6 is a very economical wall charger that can charge your batteries in less than 45 minutes.

That's it. Anticipating your next questions...how fast? This car on a 2S lipo geared appropriately will easily achieve 50mph on the street, geared more aggressively it could get to 60. How long? Runtimes with a 5000mAh 25C battery would be around 35 to 40 minutes depending on throttle use. Does it matter if I get a non-sensored motor and esc combo? No, but sensored is better for on-road giveing more smooth throttle response. What body and wheels/tires should I get? Both are standardised for touring cars, don't worry. Any wheels/tires will do, the only tihng to watch out for with the body is that you don't buy a 200mm one for nitro cars, which will look wide on the TC4. Make sure you get a 190mm version.

Hope all that helps. If I do a little napkin math in my head, I reckon you are looking at about $400 for all that, from cheap sources, but don't forget that $100 of that is in the batteries (if you get 2) and charger, which you only buy once and can be used for all your RCs. This is a VERY economical RC to build and run once you get over the initial shock of setting up for electric.