Gallery: Bill Caswell's $500 BMW 318i World Rally Championship CarS

The Chicago garage where the car was built. It belongs to Caswell's mom.

Gallery: Bill Caswell's $500 BMW 318i World Rally Championship CarS

Fixing damage sustained during a Rally America event.

Gallery: Bill Caswell's $500 BMW 318i World Rally Championship CarS

She likes it.

Gallery: Bill Caswell's $500 BMW 318i World Rally Championship CarS

Dirty E30. The kludged skidplate was built 30 minutes before leaving for an event after Bill noticed that his previous effort had suffered damage in an impact.

Gallery: Bill Caswell's $500 BMW 318i World Rally Championship CarS

Reinforcing the car's front subframe prior to departure.

Gallery: Bill Caswell's $500 BMW 318i World Rally Championship CarS

Basic ingredients.

Gallery: Bill Caswell's $500 BMW 318i World Rally Championship CarS

Ignition repair done in the field at a previous rally. The stock four-cylinder (1.8 liters, 136 hp) seen here was replaced with a high-mileage E30 M3 powerplant (2.3 liters, 192 hp) for WRC Mexico.

Gallery: Bill Caswell's $500 BMW 318i World Rally Championship CarS

The impromptu "inspiration corner" of Bill's mom's garage.

Gallery: Bill Caswell's $500 BMW 318i World Rally Championship CarS

Good-luck charms.

Gallery: Bill Caswell's $500 BMW 318i World Rally Championship CarS

Silliness.

Gallery: Bill Caswell's $500 BMW 318i World Rally Championship CarS

Disclaimer: read. Sticker: voided. Done.

Gallery: Bill Caswell's $500 BMW 318i World Rally Championship CarS

Chassis damage sustained during Rally America events. Note the daylight poking through the cracks in the unibody.