The golden rule strikes again

Remember what I said yesterday about the golden rule? Something with slacking off the blipping long enough and ending up with a tripod. Well, you guessed it. Another nightshot. It's getting dark friggin' early again, so this is the result.

What you're seeing is the Zonnelaan in Groningen which becomes the Zernikelaan. The road over the viaduct is the ring road of Groningen, this section is called Plataanlaan if I'm not mistaken.

Can you guess the number of cars that passed during the 20 second exposure?