Mail Truck EXPLODES, Catches Fire, Then Rolls Into Somebody's Yard

A mail truck suddenly burst into flames on a Kansas City, MO residential street, and rolled backwards into somebody's yard, stopping there still on fire. 

Apparently something overheated while the driver was spinning his wheels to get un-stuck from the snow. Thankfully the driver's okay, but at least a few people will have to re-order their packages.