I carpool with my girl. We drive her car since we work the same hours and our companies are not that far apart.
It's a 05 Sentra that gets 35mpg so we don't complain. Not the ideal car we would like but since gas prices are high we don't plan on trading it in for awhile.
$35 to fill it up on E and that can last a week.
From our house to my work it's 31miles. So we average 70 miles a day.