It is illegal and extremely dangerous.
yes it is I have asked 3 officers and they all said that it is you can even ride in the back on the freeway
Yes. I personally can't quote any sources, but please do not stop and back up on a freeway. It is very dangerous and no doubt illegal.
about the same speed as freeway traffic
HELL no. What is wrong with you? Not only is it insanely illegal but it is extremely dangerous. Remember that you're not the only person on the road. Don't be a selfish person. If you don't get yourself killed you'll probably get someone else injured or killed and yes you'd definitely be at fault for BACKING UP on the freeway.
150cc
In Florida, a motorcycle must be at least 5 bhp to go on the freeway. The cops usually translate that to 150cc or better
http://wiki.answers.com/Q/What_is_the_legal_size_motorcycle_allowed_on_california_freeway"
A mini chopper can be driven on the freeway as long as it is considered legal. The mini chopper will need to have a title, license plate and need to be inspected by the DMV.
To freeway to freeway to have to do what you do.
never
Since freeways are usually roads with limited access, land bordering a freeway does not necessarilly have access rights to that roadway.