Below is a excerpt pertaining to Honda only....
Honda Motor Co. (7267 JT): The carmaker may build a plant at a location high above sea level in Thailand as part of flooding countermeasures, the Yomiuri newspaper reported, citing the company. The stock fell 0.6 percent to 3,160 yen.
Source;
http://www.businessweek.com/news/2012-03-26/chubu-electric-honda-motor-tata-metaliks-asia-stocks-preview