Racetracks pretty much look the same from the grandstands or on television - a vast expanse of asphalt on which drivers do battle.

从看台上或电视上看到的赛道几乎是一模一样的——不过是一条宽阔的柏油路，几辆赛车在上面你挣我抢。

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Japan's Toyota has also been working on an in-car system, called Entune, to which drivers will be able to connect their smartphones via Bluetooth wireless links and other means.

日本丰田汽车公司一直致力于研究一款名为Entune的车内系统。该系统能使司机通过无线蓝牙和其他方式对智能手机进行连接。

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The relevant behavior here is the speed and care with which drivers operate their cars.

在这种情况下，相关的行为是驾驶员开车时的速度和谨慎程度。

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There were power failures, which made it difficult to warn drivers about flooded streets.

VOA: special.2010.05.17

Im Sambath heads the Cyclo Conservation and Career Association, which looks out for the interests of the drivers.

VOA: standard.2010.06.14

"We have a bad economy right now, "I think that of the drivers is the bioscience industry, which is helping to build new enterprises and fill new jobs."

VOA: standard.2009.11.25

In Massachusetts, large sums were spent to widen and re-engineer Route 3 to allow speeds of 68 miles per hour, which drivers promptly adopted by driving at 68.

WSJ: Jenkins: The Answer Is a Longer Yellow

Previous accidents in which drivers hit crossover gates were severe, but the gates were in the wall and not the fence for Mike Harmon's accident at Bristol in 2002 and Michael Waltrip's at the same track in 1990.

NPR: Fans Injured When Car Sails Into Fence At Daytona

Warnings to users (perhaps at certain times and locations), initial authentication, background check requirements, reporting and logging pickup location information and details as to which drivers saw which passenger signals, as well as logging all driver locations on an ongoing basis are some initial suggestions.

FORBES: Smartphone Taxi E-Hail Apps: New Convenience or Potential Deathtrap