Which Hardrock? They make about 5 different ones?
http://www.specialized.com/us/en/bikes/mountain/hardrock
If it has a lock-out front fork, lock it out on pavement & smooth trails. Install a set of Kenda Kross tires if you'll be mostly on the streets...
Motorcycle questions should be directed to the motorcycle section. This is cycling. You know, like in bicycles. Look under Cars & Transportation & find Motorcycles before posting a question.
engine deck? tiller engines? Cut Off Switch? water pump? I don't have any of those parts on my bicycle. You want the motorcycle section. Not the cycling section.
Brooklyn must be way different than the mid-west if you're worried about getting ripped off. I found this link through another who answers questions. Good stuff. Read it. How to Choose a Bicycle
http://www.rei.com/expertadvice/articles/bicycle.html