that's similar to the design in the al qaeda online magazine "inspire." a separate source also said the pipe was wrapped in black tape. investigators have been saying for some time that the instructions in that al qaeda and arabian peninsula magazine "inspire" is they are available in that magazine. they teach people how to build a bomb. now, a new account of 90 terrifying minutes when a man named danny says he was trapped in his car with the boston bombing suspects fearing he would be killed literally at any moment. dann is now telling his story of being carjacked at gun point and all the harrowing turns. he fills in the critical gaps of the timeline of the manhunt for the tsarnaev brothers. cnn's brian todd is in boston aahow itall played out. brian? >> wolf, this is the area where the carjacking began along this