I really like gokarts, lots of fun and you learn a lot about vehicle dynamics and handling. I have my doubts about that gokart above ...as to how it would handle, stop, etc. not to mention if my right ear would be totally deaf after a drive.
My fun toy car that I have now is by far the fastest and most fun vehicle I've ever owned ...or likely to own. It's a semi-luxurious street car not a hardcore race car, so I drive it frequently and have lots of fun with it. A few months ago I completed a turbo upgrade along with related support systems which put it over 700hp, so it's no slouch. Here's a little picture of me roadracing it at Pocono last year:
