Hamamatsu and Iwata (neighboring city of Hamamatsu) are home town of YAMAHA, SUZUKI and HONDA.
So I visited to my friends who work Water vehicle (Jet ski) Div of Yamaha Motor Japan.
Yamaha Motor Japan head office at Iwata city
Hamana-lake and Hamana-lake bridge
Yamaha Marina Hamana-lake
BBQ and Jet ski with Yamaha's friends
Hamamatu is famous place of Gyo-za http://en.wikipedia.org/wiki/Jiaozi#Japanese_version 
It was so yummy!Hamamatsu is famous place of Motor Bike too because Yamaha, Suzuki and Honda's home town. Also have some motor bike accessary and parts shop.
NAPS
They sale plenty of accessary and parts. it's like a super market of motor bike. I spent time here about 2hr for shopping and just looking. It was so much fun, 
HYOD They pruduce and sale Racing suit,.
Also they sale parts and accessary
