Why does tallahassee paint a "3" on the side of his truck in the film zombieland?

Its a tribute to Earnhardt.Why does tallahassee paint a "3" on the side of his truck in the film zombieland?
The number on Dale Earnhardt's car.
you shouldn't care.Why does tallahassee paint a "3" on the side of his truck in the film zombieland?
I don't think so