This unique vehicle is the Nunrunner, a 1962 Dodge Dart, converted into a custom limousine.
Apparently the Nunrunner was commissioned by the Vatican but was later sold to a Catholic Church in Kentucky. It might look old and rusty, but this Dodge is actually a pretty modern car. It has a V10 engine, borrowed from a Dodge Ram, and a T56 six-speed manual transmission. The chassis has been fortified and the suspension replaced with one from a 2004 CorvetteZ06, so you’re not likely to experience any technical problems.
The Nunrunner was auctioned on eBay and sold for a mere $3,350. I’d pay more only to be the owner of a unique vehicle.