Estimated time drivers save by using real-time GPS traffic updates
Drivers that use GPS systems with real-time traffic info spend 18% less time behind the wheel than those who do not.
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You also have to remember that 81 days included a fairly serious problem that caused a delay. D* has posted "September", but that is clearly a date they are 100% they will make. So lets hope things go hitch free this time and we beat the prevouis 81 day time frame.