If planets were cars
The fastest planet in our solar system is Mercury, flying around the sun at 107,082 mph. Can you imagine having the windows open while driving at 107,082 mph?
Neptune is the Sunday driver of our solar system. 12,191mph. If you knock off the last three digits, it's equivalent to driving a car. With that method, Earth would be about 67 mph. Yup, that sounds about right for earthlings.
Jupiter is the big rig. Road hog. Huge. Chugging along at 29 mph. Saturn is a school bus. On the big side. Full of fun. Driving at a careful 21 mph. Uranus is a bicycle at 15 mph, always lifting it's butt off the seat.
Here's all the planet orbit speeds around the sun in miles per hour:
Mercury: 107,082 MPH
Venus: 78,350 MPH
Earth: 66,630 MPH
Mars: 54,000 MPH
Jupiter: 29,240 MPH
Saturn: 21,640 MPH
Uranus: 15,290 MPH
Neptune: 12,250 MPH
Pluto: 10,700 MPH
And yes, I am including Pluto as a planet. Go suck it you tightwad planetites.