1) What is the trade-in value of my old car?
(Word to the wise: No trade-in is "Excellent" by Kelley Blue Book Standards. Use "Good" for a near perfect car and "Fair" for a decent, but not perfect car.
Go to: http://www.kbb.com/kb/ki.dll/kw.kc.uy?kbb.CA;;CA019;;CA019&93704;t&21&&

2) How much could I sell my old car for as a private party?
Go to: http://www.kbb.com/kb/ki.dll/ke.kb.sp?kbb&&&usedCars;slp

3) Government Crash Test Ratings
Go to: http://www.nhtsa.gov/cars/testing/ncap/

4) Vehicle Rollover Ratings
Go to: http://www.nhtsa.dot.gov/cars/testing/ncap/Rollover/Index.htm

5) Child Seat Safety Information
Go to: http://www.nhtsa.gov/CPS/CSSRating/Index.cfm

6) Gas Mileage Comparisons From the EPA
Go to: http://www.fueleconomy.gov

7) Get a Carfax vehicle history report here! We recommend you NEVER buy a used vehicle without knowing its history. We trust Carfax Reports."
Go to: http://www.carfax.com

8) Official Factory Web Sites For Every Brand of Car In The US