A Toyota (as in the car) is the longest sentence I can think of that reads the same going forwards as it does going backwards, so. Any advances on seven?
apparently A computer program was created that resulted in a 17,259 word palindrome, the longest one to date. http://www.norvig.com/pal2txt.html
but it does really make much sense.
A man a plan is really good, and Squarebear's I like also.
That computer one is just gibberish, although it counts, I don't have enough free texts or the thumb strength to send it!