I am new to the recumbent scene. I myself don't have one (Yet). But I'm getting a Sun X3 XS trike for my wife. I am intrigued with the concept of recumbents, and the comfort that they promise. My question is for the same level of fitness would a recumbent be able to move as fast as say my current Trek 7.3? And I know that there has to be a difference between 2 and 3 wheels, but I commute on my bike 18 miles each way, and I REALLY don't want to get home any slower than I already do. I'm in North Indiana so at most I have lightly rolling hills, and decent pavement to ride on. So what say you experts? Are you at about the same speed on your-lazyboys-on-wheels as on a upright? Thanks for the help.