Build Vehicles

You get a +2 bonus on Craft (technological device) and Use Technological Device checks when building or using a vehicle. Your technological limit for building vehicles is increased by 2.

Once per day for 1d6 minutes, you may double the speed of a vehicle you are driving. When this period ends, you may extend it for 1 additional minute by making a DC 20 Use Technological Device check. You may continue to extend the period each minute by making another check; each subsequent check increases the DC by 1. The vehicle's speed returns to normal the first time you miss a check. A tinker may select Build Vehicles as one of his tinker bonus feats.