There are about three other Ryder truck sightings in OKC near the Murrah building between 8:30 and 9 am. Each with good witnesses. Several experts on this believe there were two Ryder trucks involved in the operation including Craig Roberts formerly with TUlsa PD who knows OKC PD officer Don Browning.
iirc, mcveigh testified he spent the night of april 18th in Newkirk, OK. I believe he stated that he left Newkirk some time after 7 am on the morning of the 19th for OKC.
sorry I can't pin down the exact reference to these admissions, but I've always had problems squaring the time frame of the drive down I-35, through rush hour traffic backing up in edmond, and arriving at murrah in time to be seen asking directions between 8:30 and 9:00 am. I don't think it's pysically possible, especially in an operatioin that requires precision timing.
iow, another truck already in the city had to be involved.
p.s. I've got similar problems with the "get away" time frame which has mcveigh running several blocks on foot from murrah hopping into the yellow merc, fighting OKC traffic, and arriving in perry at the time he was arrested.
FWIW, I tend to go with the multiple truck theory. At the very least, there may have been 2 trucks, one that the government knew about (the one checked by the marshalls in the alley), and the one that was detonated.
Remember the discussions way back of the possible fed look-alike? I still suspect that McVeigh was working for the government, either defense or CIA--and that he expected the sightings of the look-alike to be his alibi if anything went wrong. The feds gave him and Nichols up because they had to prosecute somebody, and McVeigh and Nichols were the most expendable.
I don't have that written in stone--It's just the way I see it at this point.