One thing I have found is, I am so used to upright cycling I can do it with my eyes closed (nearly). On the recumbent I am having to learn to cycle, balance, cadence etc... Its not so second nature that I my mind can wonder off. This could be good or bad depending on how you look at it. On my upright bike I can concentrate nearly 100% on traffic, or looking at it another way, let my mind drift = bad. Have you ever driven somewhere very familiar and then realised you don't remember the journey? Well I found on the ride in today I know the route well enough (potholes, bumps, etc..) that I could concentrate on cycling and balance at slow speeds. Still feels slower that on an upright but I'm told this is nroaml until I get 'up to speed'.