Okay, I just checked GM's website
www.livegreengoyellow.com, even though I am a Ford fan.
Currently, GM produces the following E85 vehicles:
2007
Avalanche
Silverado
Tahoe
Suburban
Sierra
Yukon
2006
Avalanche
Impala
Monte Carlo
Silverado
Suburban
Tahoe
Sierra
Yukon
The trucks/SUV's have a flexfuel 5.3 liter motor, and the motors put out more torque and horsepower with the use of E85 fuel because E85 has more energy in it. I didn't look up the exact power ratings of the motors, but I think there area a lot of vehicles listed above that could tow a boat and a lot of other things. I tried pulling our 20' boat with an Escape and will agree that was scary. However, we pull it all the time with my dad's 1995 5.0 liter F-150 with a worn motor and it pulls the boat just fine.
Here are a couple more things from GM's website:
There are 39 million acres of crop lands available to produce 16 billion gallons of E85 a year.
If you drive an E85 vehicle, and use E85 in it, you will put out 1.7 metric tons less of greenhouse gas a year.
Of course, the big problem is the availability of E85. I have a government depot right next to me, so that might also be an option for me. That is why I think Congress should require all gas stations to serve E85.