Hello everyone! So, two weeks ago I bought a bike for commuting, namely Author Compact (http://www.author-bikes.com/bikes/2012/compact-2012-en/), but to my surprise I got very excited to see how fast and far I can go. So far I have done 170 miles on it, doing 25-40 miles at a time (I have no biking experience save for when I was a kid, now I am 24). Today I decided to check how fast I can go. After half an hour my average speed was 16.7 miles, after an hour 15.9 and then I had to rest for a good 10 minutes. Road was flat. Is that more or less acceptable? Also, how much difference would a real road bike make? Thanks in advance!