Not to worry, I've seen plenty of faster people that didn't have motors, too, so it's just being accustomed to it.

Long ago, when I started hiking, i was overweight and slow going up the hills. I huffed and puffed for 4 hours going up Round Mountain, finally got to the top, and there were a bunch of old white-haired people up there that looked like they were right out of the nursing home. Then going up Greys and Torreys Peaks, I got passed by a 12-year-old kid. Then going up the Longs Peak Trail, I got passed by a fat lady, which wouldn't have bothered me, except that I couldn't tell she was even breathing hard. Then back down here to Texas for bicycling and all the sweet young thangs riding bikes are faster than me. So I learned humility along the way, and now it doesn't bother me if somebody really IS faster than me. And I also appreciate it if they wait up for me, which is really cool.