This weekend, the American Le Mans Series is running at Laguna Seca. /SHAKEDOWN host Leo Parente is out there, and he got a peek inside the Rahal Letterman Lanigan team garage at the racecars within.

Those cars are the newest GTE racecars in the series, the BMW Z4 GTE. The team converted the GTE versions from the BMW Z4 GT3 car.

How they did it is in the details, primarily aero, and Leo gives us the guided tour — at least of the parts we're allowed to see.