[Tervuren]

To me, there are different criteria.

In a daily driver fun involves low stress.

This means something the SUV's will see and not run me over.

This excludes motorcycles.

This excludes sports cars unless very brightly colored.

Road and traffic environment change what is fun.

No budget has been set.

A smart car with an engine swap to be 300HP and a neon orange paintjob would probably make a good choice as a fun daily driver. It is tall, the color would make it noticeable. It would be easy to park because of the small size.

Reality, I have several cars, I take whichever suits the traffic/weather/road that I expect.