My attention goes to the safety concerns of your automotive. There could be so many people i believe will not really take preventive measures of keeping track of the automotive vehicle status like Brake Oil & Engine oil levels, Tire pressure etc unless they see any problem with the vehicle and have to go to garage or the vehicle is brokedown on a freeway.

Maintenance of the Tires is one of the important thing to do at frequent intervals of time, you could check the tire pressure once in a month and also at times when you are planning on a trip within a month. Inflated tires or Low pressure in tire will cause the Mileage to go down and may lead to catastrophic damages some times. Try to always maintain the recommended PSI (pounds per sqare inch) for the tires, this will be around 30PSI for most of the cars and you could check with your vehicle manufacturer manual. This is also available from the vehicle's tire information placard or certification label.

The other thing to concern most is the Engine Oil level. For every 3500 miles driven,Oil and the filter has to be changed to prevent breakdown and mechanical failures.Follow the manufacturers servic This will help the smooth operation of the vehicle at the same time.

I would recommend one has to visit this website for all the important things to remember for the safety and good running of the vehicles.
http://www.pueblo.gsa.gov/cic_text/cars/natsafe/natsafe.htm

Here is the link for the National Highway Traffic Safety Administration and this website is maintained by the United states department of transportation (DOT), it has all the information about the safety , vehicle and or its parts recalls or defects etc.
http://www.nhtsa.dot.gov/