All kids are different. Neither of your children are abnormal. Just like some adults prefer playing chess while others would be playing football, children have the same interests or lack thereof.
The best thing to do is to encourage your son to be well rounded. So what if he doesn't like the riding toys, take him to the park, let him run around, encourage him to climb and slide. Let him color for one hour, but then he has to get the wiggles out and be active for one hour.
Also, puzzles and drawing are not 'girl' activities. They are things that have to do with his motor skills that all children are interested in, to one degree or another.
In fact, my 4 year old son isn't interested in puzzles and his teacher is worried and actually makes me practice puzzles with him, b/c they help children understated math concepts so be glad your son has interests.