For their part, Toyota officials say they have not held back on any hybrid parts to other companies.
Toyota officials raised their sales forecast for the fiscal year ending March 2007 to 8.47 million vehicles.
This would be about 10 percent of the total semiconductor purchases, Toyota officials said yesterday.
Trevino said he had talked with Toyota officials, who asked him not to wear the shirts.
The conference rooms above the factory floor are named after former Toyota officials.
Toyota officials said it had a domestic market share of 43.1 percent.
Toyota officials declined to discuss the technology beyond what they showed.
Three years ago, Toyota officials said they were aiming to take 15 percent of the global car market by 2010.
But Toyota officials argue that buyers are looking at more than a company's headquarters.
"Israel is not a huge market but it is significant," a senior Toyota official said.