I've been happily commuting on my whyte stirling for the last 18 months and averaging 15mph , I'm just about to move to an office a five miles further away and while looking forward to the longer ride I'm not looking forward to the extra time its going to take. I was thinking a road bike may help speed up the journey but wanted to get an idea of how much of a difference it would make - does any one have any experience of moving from a hybrid to a road bike for a commute? I'm trying to gauge what (if any) time savings are likely and what kind of bike would be a good upgrade. All tips for reducing the cycle time welcome