orad Bike vs. Velomobile
 

Great video highlighting the differences in performance. From our friends ar GCN. (and apparently, I can't type, can a mod fix the title please).

well road bikes not only help you to get in shape but also help you to explore outside

It never gets easier, you just go faster. This is just as true with velomobiles as it is with road bikes. My test ride in a velo was immediately following a metric century in which I took the final 4 miles at 24 mph, which I thought was a good but tiring finish. With barely enough time to catch my breath, I had a chance to ride a Quest. It was adjusted for an x-seam about 3 inches too long for me, so I had to perch on the front of the seat to reach the pedals at all. I took it 3 miles down the road, then back - both directions at 25 mph. I can definitely see the appeal; unfortunately it's just not in my biking budget.