But, would we not expect EA's DNA to be in and on his car, including the trunk?
yes but how would they know it's his without a sample to compare too? i doubt they had a reason for a search warrant for his DNA at the time. Sure they found DNA, but they couldn't know it was his. Just like the trunk. However, is DNA in the trunk, possibly mixed with hers, is important to the case and I am sure they are.have/will test against his. his DNA is in car is not that important to them, IMHO.