I've been riding to this bakery about 7 miles away every few weekends. I've done that on my hybrid. I would feel as though I did some workout by the time I got home.
This morning, I took my new road bike to go to that bakery for the first time. I chose the same route, and the trip took about the same time (60 minutes). However, I was clearly a lot less fatigued when I was back home - almost as if I had only begun riding. That came as a surprise to me.
What can make such a noticeable difference? I realize that the road bike weighs about 10 lbs less and has higher-end components (Ultegra vs Deore), but is that it?