Took my Malibu to VIR for a track day put on by trackdaze.
37 mpg for the 2 hour trip there, 36 mpg for the two hour trip home, 8 mpg while on the track.
Best lap time 2.45.5, not bad for a V6 Malibu with 152k miles and junk tires.
A lot of people there were scared to push their cars very hard but I ran mine along the ragged edge 90% of the time.
I would have paid to see the look on peoples faces as Mustang and Vette owners realised they were being passed by a Malibu with less then 200 hp.
Pics of my car and track map.