In the fight for a bigger share of the domestic car market, Toyota Motor Corp., Honda Motor Co. and Nissan Motor Co. have shifted to a new battlefield -- "telematics" informational network systems
Prompted by voice commands or input on display panels, telematics systems convey a variety of data, including traffic information, e-mail and access to emergency assistance.
Experts say telematics services are becoming an important feature in the highly competitive automobile market.
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