Does a fast cash loan company have more collection power than other creditors?

I took out two loans from online "fast cash" sources. One loan was for $150, and the other was for $200. It's looking like I won't be able to pay them back on time. I'm gonna do my best to work it out with them, but chances are it will go to collections. Can they put a lien on my car, or get into my bank accounts for collection? Do they have more power than other creditors usually have, since it is cash?