From Wikipedia:
Flywheel is a 2003 American Christian drama film about the unexpected pitfalls that a used car dealer experiences as he suddenly becomes honest. The dealer intentionally overcharges his customers until reaching a turning point in his life where he decides to end his shady business practices and become a Christian. Alex Kendrick both directed the film and starred in the lead role, and with his brother, Stephen Kendrick, who co-wrote the film.

Not From Wikipedia:
The quality of this low-budget film is similar to that of "Time Chasers" and maybe "The Final Sacrifice." It also features earrape and a child whose voice is possibly dubbed by an adult.