Happened at 5am this morning.."CHELMSFORD — A serious crash early Sunday morning on Gorham Street has left one person with serious injuries.Police say a car driven by a 21-year-old from Billerica hit a telephone pole around 5 a.m., ejecting the driver.Chelmsford Fire says the victim was taken by medical helicopter to Beth Israel Hospital with serious injuries.There is no word yet on the cause, but police believe speed was a factor."