The Moab Car Show in April is a nice way to start Spring! Not only is it one of the earliest area car shows, Moab is fun place to visit.
The show was held in Swanny City Park - a nice grassy park with lots of on street parking around the perimeter. It's only a few blocks walk from there to a variety of restaurants for lunch or dinner.
After the car show, spend a couple hours and drive through Arches National Park before heading home.