In his own words: "When you ride with Mr. T, Mr. T gonna get you there in one piece". He also mentions that he'll get your kids acting right and you'll arrive at your destination safely, "or else". And when Mr. T says "or else", Mr. T means it.
You can pick up Mr. T's TomTom voiceover for $16.95 on the TomTom website. If you own a TomTom, you owe it to yourself to buy this.