[kach22i]

All the aero modifications combined have greatly increased down-force, and with no loss of mpg (a balancing act).

This is a much safer vehicle to drive in wet weather than it used to be. Next time you get "ice out" conditions, check to see which vehicles are in the ditch, they will mostly be pick-up trucks.................but not me.

I just have to do one more oil change and check the air pressure in the tires and I'm ready for winter.

I suspect that there will be much less deflection from snow sitting on the new cover than there used to be with the fabric cover. This might even save me some time with the old push broom this winter.

When this cover gets worn out, I'd like to try one which is the proper width and hinges up, some Monopan from Canada would be fun to experiment with.

I'm expecting to get 2-3 years out of this, much will depend on the UV resistance of the Coroplast.

About aerodynamics; the fabric cover would deflect some from the redirected air over the roof, and flutter at high speed. The flutter is not good for airflow from what I've read. This more rigid material should perform better than the old fabric despite the extra drag caused by the hex head fasteners.

As a bonus, the old fabric cover serves as a travel sized bikini top for when my old Targa 911 is parked. No hot leather seats, bird poop or leaves to worry about now. I just drape the old tonneau cover over the top. I might add some grommets to it so that I can bungee it down on windy days.