Wherabouts are you?
Its best if you haven't ridden a moving bottom bracket bike before to do a test ride in an empty car park or the like so you have plenty of space and be free of worries re someone running into you.
If you feel comfortable on the quest, do you want to try the Silvio at the Sutherland bike track ? Its an outdoor , smooth surfaced track open to all cyclists. Only hassle is cycling clubs sometimes have exclusive use of it. During the week its fine though.