I am in So Cal and I ride my Kurt Kinetics Road Machine almost every day. If it wasn't for the trainer, I would only be able to ride on the weekends and that is not enough. I do sometimes put lights on my bike and ride at night but it take much more time than just jumping on the trainer and putting in a Spinervals DVD.

By the way, it isn't difficult to get your heart rate up as high as you want. Just shift to the big chain ring and the 12 cog on the back and turn the cranks at 100 RPMS, you will be sweating and your heat rate will go up.

Without the Spinervals DVDs, I couldn't ride the trainer ether.