After releasing photos and information on its new Z4 roadster yesterday, we now have a pair of videos showing the Z4 in action. In the first clip BMW Automobile design head Adrian van Hooydonk and exterior design head Anders Warming discuss the new design. The operative word in the new Z4's design appears to be "Joy" although how joyous this car will be remains to be seen. Certainly the new look should make observers a lot happier than old one but ultimately any car is about the driving experience. Here the second video demonstrates how you can use the Z4 for the automotive equivalent of finger painting. The videos are after the jump. Thanks to Alberto for the tip!