Bumper stickers seen along the way:

HANG UP AND DRIVE

I DO WHATEVER MY RICE KRISPIES TELL ME TO

DYSLEXICS OF THE WORLD - UNTIE!

I THINK YOU LEFT THE STOVE ON

SO MANY FOOLS
SO FEW COMETS

YOU'RE JUST JEALOUS BECAUSE
THE VOICES ARE TALKING TO ME

THE GENE POOL COULD USE A LITTLE CHLORINE

GIVE ME AMBIGUITY OR GIVE ME SOMETHING ELSE

HORN BROKEN
WATCH FOR FINGER

MONTANA
AT LEAST THE COWS ARE SANE

EARTH IS FULL
GO HOME

I HAVE THE BODY OF A GOD
 .......................BUDDHA

THIS WOULD BE REALLY FUNNY
 IF IT WEREN'T HAPPENING TO ME

SO MANY PEDESTRIANS
SO LITTLE TIME

I USED TO BE DISGUSTED
NOW I'M JUST AMUSED

CLEVERLY DISGUISED AS A RESPONSIBLE ADULT

IF WE QUIT VOTING
WILL THEY ALL GO AWAY?

POLITICS - FROM THE WORDS "POLY," MEANING "MANY,"
AND "TICKS," AS  IN "SMALL, BLOOD-SUCKING PARASITES"

THE FACE IS FAMILIAR
BUT I CAN'T QUITE REMEMBER MY NAME

HE WHO DIES WITH THE MOST TOYS...
STILL DIES

EAT RIGHT, EXERCISE, DIE ANYWAY

ESCHEW OBFUSCATION

ILLITERATE? WRITE FOR HELP

WHO ARE THE GRATEFUL DEAD       AND WHY DO THEY KEEP FOLLOWING ME?

HONK IF YOU'RE ONTOLOGICALLY ALIENATED

HONK IF ANYTHING FALLS OFF

CHANGE IS INEVITABLE
EXCEPT FROM A VENDING MACHINE

HE WHO LAUGHS LAST THINKS SLOWEST

THE NEW RIGHT IS FUNDAMENTALLY WRONG

HE WHO HESITATES IS NOT ONLY LOST
BUT MILES FROM THE NEXT EXIT

I REFUSE TO HAVE A BATTLE OF WITS
WITH AN UNARMED PERSON

CHEW ON A SOCK

THIS ISN'T MY IDEA OF A GOOD TIME

DESPERATELY CLINGING TO UTOPIAN ILLUSIONS

STAY TUNED!
I COULD SAY SOMETHING BRILLIANT  AT ANY MOMENT! (My personal favorite)

IT'S BEEN LOVELY
BUT I HAVE TO SCREAM NOW

I THINK WE MET IN A PAST LIFE
AND YOU WERE A DIPSTICK THEN TOO

THIS BUMPERSTICKER EXPLOITS ILLITERATES

I HAVE ANIMAL MAGNETISM
WHEN I GO OUTSIDE, SQUIRRELS STICK TO MY CLOTHES

MINIMUM WAGE FOR POLITICIANS

VISUALIZE USING YOUR TURN SIGNALS

NOT ALL WHO WANDER ARE LOST

 THOSE WHO ABANDON THEIR DREAMS WILL DISCOURAGE YOURS

I HAVEN'T LOST MY MIND
IT'S BACKED UP ON DISK SOMEWHERE

OH, EVOLVE!

YOU!  OUT OF THE GENE POOL!

DARE TO THINK FOR YOURSELF

VISUALIZE WHIRLED PEAS

THIS IS IT
I DON'T HAVE ANOTHER CAR

GONE CRAZY
BE BACK SHORTLY