Catch some combustion-engine action while you can with today's Groupon: for $22, you get four April 2 opening-night tickets to Indianapolis Speedrome on South Kitley Avenue (up to a $44 value). For children age 6–11, tickets are $5, and children younger than 5 get free admission.

Indianapolis Speedrome is the home of the World Figure 8 Championship and one of the early tracks to implement stock cars. Opening night guests will be welcomed to the storied arena at 6:53 p.m., with a command to have the cars start their engines at 6:58 p.m. For more than three hours, stock cars burn pure adrenaline as they race on the stadium's oval and figure-eight tracks.

The first hour's heats let each make and model bake the track to a golden brown before the featured events burn it to ash as Muscled Roadrunners go head-to-head with spritely Bandoleros and parents pushing children on bicycles. The evening concludes with a showdown among high-class, custom late models and an on-track trophy presentation. Seating is first come, first served, and attendees are encouraged to arrive early.

Rain date is April 9, 2011.