I flew to Denver to buy a car and drove it about 1,250 miles home...then later drove it about 900 miles for some new (lightly used) wheels and tires. Although in all honesty I was going on a road trip anyway and the wheels/tires were only about 100 miles out of the way.

A long, long time ago I drove about 100 miles to buy a worn-out engine that I wanted to rebuild.