250cc Scooter

I have already tried checking the TN DMV site and also google and I can't seem to find the answer to this. Does anyone know if, in the state of TN, a 50cc scooter is street legal? I assume a motorcycle license is needed as well? These probably sound like dumb questions but I don't know much about this and I would like to learn. I do know that the 150cc and 250cc are definitely street legal; just not sure about the smaller size, which is probably would I would want to start out on as I have never ridden one before.

http://www.happyscooters.com/250cc-Water-cooling-Deluxe-Street-Legal-Moped-Scooter-p-446.html

has abs breaks
headlights
breaklights
side mirrors
turn signals
and i have a drivers license
these kinds of scooters go roughly up to 70-80 mph
street legal?
and i would get it insured and state inspection

same for this one, woul dthis be street legal?

http://www.happyscooters.com/250cc-Deluxe-Air-Cooled-Cruiser-Motorcycle-p-451.html

hey guys im just starting to look for a bike.. i live in utah and want something street legal but small.. i just want it to drive around just to work and girlfriends house ect.. I like the look of bullet bikes not harley lookin bikes and i wouldnet mind a scooter if its old school lookin not fruity no offense if u have one i think they are kool. Im thinking somewhere between 80-250cc would be good but again i dont know mucha t all.. another problem is i dont know how to ride a motorcycle (with the clutch) i have rode a automatic little scooter but thats all.. but i could learn if thats what it comes down too.. I mainly want a small bullet bike.. something actually smaller in size not just engine.. so i can touch my feet to the ground easy.. feel more comfortable.. anyone help me? im so anxious thanks so much guys.

I want one, like this:

http://www.scooterdepot.us/250cc-Water-cooling-Deluxe-Street-Legal-Moped-Scooter-p-446.html

I'm straight...will I be laughed at.

This is more of a necessity thing so I can get to work and I can't afford a car.