A trip to Las Vegas can now include participation in the EXR Racing Series (exrseries.com) of arrive-and-drive auto races. Competitions will take place at the Las Vegas Motor Speedway and other venues. Each driver pilots an identical EXR LV02—a lightweight (1,653 pounds) car powered by a 230 hp 4-cylinder engine—in 20-minute sprints or in endurance races that can last as long as six hours.

Prices range from just under $5,000 per person for a single sprint race to nearly $140,000 per team for a VIP packa…