A great day for a ride.  Sunny, warm, but not too hot.  When you are on a ride you experience things you never notice other times.  Like the pockets of cooler and warmer air as you go.  The difference shade makes, the smells that are so diverse. 

Also, of course, there's the road hazards, the exhaust and bugs; but even those are part of the adventure.  I don't know who dumped a load of wood on the highway around the lake, but it could have been very dangerous for someone.

The pine smell up in the mountains is one that hasn't been recreated artifically yet.  Soon the fall smell will set in.  My favorite time of year.