1. Yeah, don't take it on the highway. It's a golf cart and not safe on large roads.
That's mostly a visibility issue. Larger vehicles just can't see them. It's also a on-accident vehicle. If you get smashed, the car is totaled (if recognizable) and Smart Car is down one customer (if recognizable). It's a good city vehicle, but I hate when one of them moves into my blind zone on the highway. Ask Tobin how he feels about them.
You can push it to you destination faster then the Smart will get you there at full throttle. If the smart Car was any slower, it would be going backwards. I was riding with a friend in her Smart Car when we were suddenly passed by an old woman on a rascal, on the freeway! My friend paid a kid on a skateboard to push her Smart Car down the street so she could reach the legal speed limit of 25 mph. My friend lives 6 miles from where she works. Ever since she bought the Smart Car she has to leave the house an hour early, just to get to work 1/2 hour late. You might want to look into this car: