The road rash isnt a big deal. Clean the crap out of it (I dont care how much it hurts, get it clean. Lots of warm water) apply lots of neosporin, cover with loose bandages, so it can breathe. Clean it twice a day(more if you can), its ok to tear some of the scabs off, your main concern is infection. reaply anti biotic ointment, and it should heal just fine. However a doc will likely have some ways to keep it from scaring, which its almost guaranteed to do otherwise. I would be more concerned about other injuries, if they are present, especially the tendons (sp?) those damn things dont ever want to heal.
Now that its over, what the hell were you thinking? Sandals shorts and a T? What kind of squidly bullshit is that? I know that its just a scooter and all, but a 30mph impact to the head is enough to kill you. As in dead. As in never getting a sportbike. Get yourself a helmet, it doesnt matter what kind of budget you are on, you need a helmet. Wear some good boots, cause you dont want to break those toes (ouch!), and at least a heavy denim pants and jacket.