the go karts at boomers in dania beach florida on the turbo track only go about 20-25mph
at least 85 pounds
How ever fast it was to go plus adding nitrous and sick tires helps too! I prefer a high class jet engine for mine but it's up to you
Around 500 to 4,000 dollars
depends where it is. can be £15 for 5 minutes but for an hour it's £30 at my local go karting which is rather expensive but good luck.