Basically a stadium truck which I guess you could call a buggy. Stadium trucks can go off road and on road. Some good ones for a reasonable price are the Traxxas Rustler (Electric) RTR and the new Losi Mini-T(also electric) RTR. You can go into nitro if you want but they are generally more expensive and require more maintenance. I have the Traxxas Rustler with the ESC, if you do decide to get this one get it with the ESC, it's worth the extra 20 dollars. I've heard of the Mini-T but since it's new there have been itty bitty probs with it but nothing serious, it's pretty cool though you can go 8 mph stock with 4 cells, 11mph if you upgrade to 5 cells and 15 mph with 6 cells. The Rustler goes 20mph with a 6 cell and I think 24 with a 7 cell.
There are other good ones out there, just check out
towerhobbies.com or where I get things most often
hobbytron.com. Hobbytron has cheaper prices then other online shoping sites that I've seen.