This self development article suggests that how clean or dirty you keep the inside of your car can reflect your true personality or true self. However, if your home is immaculate this does not necessarily mean that your car will be too for reasons explained here. See:
Cars – Is Yours Clean Or Dirty
Warm regards
Joy
EDITOR & MENTOR (Self Development)
BUSINESS of JOY = JOY of BUSINESS
Dr JOY Madden's Blog 