This is by far the most reliable vehicle I've ever owned. I purchased the truck new in 1992 and I'm still driving it almost every day. It is now 15 years old and has 252,000 miles on it. Most important is that, except for the paint, it is in original condition. By that I mean that there has been no engine or other drive train work done on it. It still has the original upholstery (no worn out spots in it), muffler, air conditioner and even shocks. Maintenance has been limited to consumables like oil, filters, hoses, brake pads, etc.
Simplicity. There are no bells and whistles on this truck that are subject to break or fail.
I don't know how this truck could be improved. I've owned several other larger, prettier, and more powerful vehicles during the period I've been driving this truck. None have provided equal service.