| 摘要 |
PROBLEM TO BE SOLVED: To enable to enjoy exhaust sound whenever a driver desires and being released from the sound whenever the driver desires, without troubling pedestrians or other vehicles at all. SOLUTION: A vehicle "a vehicle with a simple sound level changing device" has a function to vertically divide a sound insulating part of a body bottom portion preventing the exhaust sound 10 of a muffler part 3, and to vertically or laterally slide or to wind up either one of the upper and lower pieces by any amount. COPYRIGHT: (C)2008,JPO&INPIT
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