Guess Why I Did This… XD

• I was driving on I-680 SB back from Sacramento.
• Got onto Martinez Bridge.  I was in the leftmost lane.
• Shifted all the way to the right lane.
• Got off the freeway at Marina Vista Avenue, the first exit after the bridge.
• Got back onto I-680 NB.
• Crossed Martinez Bridge again.
• Got off the freeway at Lake Herman Rd, the second exit after the bridge.
• Got back onto I-680 SB.
• Crossed Martinez Bridge once again.
• Drove happily back home.

…  XD XD XD!