[laser117]

I have a Dodge Caravan that I tow with occasionally, but when I tow, it's for 900+ miles. If airtabs would work in that situation, to reduce turbulence, improve stability, they would be worth the investment. If I got an increase in mileage, that would be awesome too. I'm already towing a 3000lb box. If one can do *anything* to help this situation, I think it might be worth it.

I think putting them on cars that are already small, light, and aerodynamic is missing the point. Someone said, and maybe it was this thread, that VG were a bandaid for bad aerodynamics. I tend to agree. Then let's test them on vehicles that have bad aerodynamics.

Not that I'm saying that what was done here isn't important...the information we are gathering from this thread is definitely useful. We are learning that there's no point with small cars...but how about continuing the thread with a redefined focus, or determining that this thread should more or less end at this conclusion, and subsequent testing with larger, less aerodynamic vehicles will resume at a new thread? You know, instead of declaring VGs a failure for land based vehicles, or anything smaller than a semi-truck.

I'd think that F series trucks, cargo vans, and mini-vans/SUVs might benefit from this...especially while towing. I guess the people that own those vehicles aren't normally "gas crazy", but let's face it...those people spend more money on gas than the "green people"...
It's just not always practical for people to drive the little Civics and Metros. I actually *use* my van. I'd just like to optimize it. Every little bit helps...but a 4% gain on 15mpg isn't that much, and I understand that.

As gas prices go up, maybe people like me won't be such an oddity, and that 4% becomes more significant.