Damn, you are one dense human being. YOU need to do the math on saving $ going from 11 MPG to 32 MPG. I'll give you a hint, since you are pretty slow upstairs...it's a lot of money.
It's a lot of money but it sure as shit isn't the money you are talking about. I spend $10,000 in five years for fuel in my truck, so how am I going to save $10,000?!? And you call me slow upstairs?
Let me help:
80 mile commute 5 days a week = 400 miles
For arguments sake we'll do that for 52 weeks = 20800 miles/year
F-150 @ 19 MPG = 1095 gallons/year
Commuter car @ 40 MPG = 520 gallons/year
Difference = 575 gallons/year @ @$2.50/gallon = $1437.50/year
Lets use your example.
Car @ 11 MPG = 1891 gallons/year
Car @ 32 MPG = 650 gallons/year
Difference = 1241 gallons/year @ $2.50/gallon = $3102.50/year
Curious where you came up with your 11 MPG figure anyways. My 19 MPG is an actual average. So for me, it makes no sense to get a second vehicle just for commuting.
Even if my average was 11 MPG it wouldn't make a whole lot of more sense to spend around $10,000, not including tax, insurance, and registration on another vehicle. Like I said, I'm not relying on a beater to get me 80 miles back and forth to work, especially in the wintertime.
In your friend's case, it sounded like the commute was temporary. So that's an even dumber reason to get a second vehicle.