Turbo Chargers (Score 1)

For about USD $2000 anyone could add a turbo charger to their vehicle to increase mileage and performance. For someone who drives 600 miles per week and could save 20 gallons per week, it would pay for itself within a year (with gas above USD $2). Since a turbo charger allows you to run at a lower compression, it's too bad all vehicles didn't come standard with them since it could be designed in from the start.