To draft or slow down?

[racertim]

I drive 130 miles round trip to work everyday, 2/3 is on the turnpike. I typically cruise at 75mph but I have dramatically changed my driving style this week. I have been cruising at around 62mph instead. I have noticed almost a 15% increase in economy. One thing that concerns me is that at this speed EVERYONE passes me, even tractor trailers. I am just waiting for one to not be paying attention.

Most trucks seem to cruise in the 67-72mph range. If I can find one that is around 65-67mph and draft behind it, do you think I will have the same amount of fuel economy?

While I know it's not safest thing to do, I believe that it IS safer (at least in my mind) for me to be behind a single truck instead multiple trucks coming up fast behind me.

Does anyone know for sure, or should I just test and find out?

I have a 99 civic hb auto, fyi.

Thanks!