In the morning, Susumu (one of my lab colleagues) and I went to a SUBARU dealer to have test-drive Subaru Levorg and Subaru WRX S4. Both cars were brilliant, but particularly S4's acceleration was amazing.
Coming back to our wind tunnel, we held a Barbecue party with our ex-classmates when we (except me*) were undergraduate students. Today we had 10 people from Lab for Flow Control, Lab of Space Systems, Lab of Energy Conversion Systems, and Strength of Materials Lab, and not to mention it was fantastic to have fun with them. As the party broke up, we had spent 7 hours, surprisingly.
*I am still an undergraduate student since I spent two years in Britain.