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Old 07-31-2013, 09:44 PM   #3 (permalink)
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Originally Posted by Frank Lee View Post
Breathe enough exhaust through that window and all you'll be able to do is make a mute point.
Ahh good point. Spending x amount of money on some plexi glass doesnt seem too worth it either.

We always drive with the windows down as well, so I wouldn't be too worried about carbon monoxide.

Regardless of, it's not a risk I'd like to take.

So then theoretically speaking; would propping the rear hatch open work for mpg gains on the highway or would the potential vacuum deem the idea detrimental to mpg?
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