Thanks for this. I almost wrote 'if possible' because I wasn't sure. Is there nothing LE can do with regards to these cars other than wait for someone to volunteer information.
Your point about them not being sure about the SWFA connection is a good one. The report of a car leaving the church has been discussed here before and how it relies on an eyewitness's recollection so I guess that is maybe even worse than looking for a needle in a haystack, if there can be such a thing.
I'm thinking it's just too big a project to be able to do.
To get a really rough idea of what that looks like:
1 Here are the Altima sales figures in the US by month.
Nissan Altima Sales Figures
2 For purposes of ease of discussion, let's assume those cars exist equally in the US by population. Texas population is very roughly 9% of the US population, so you can add up the sales and do the math to arrive at a broad idea of the number of Texas cars they would have to clear. Just eyeballing (because I'm too lazy to use a calculator and do the precise math!), I'm guesstimating that gives us 60,000-ish such cars in Texas.
3 Each car requires finding the owner, and find out where they say that car was on 4/18/2016, and hope they all tell the truth.
4 Can you do a car every day, with all the other things you do? I doubt it, but if you could, it's still going to take you 150 years or more to do that many. And how do you ferret out the one lie from all the rest, if one of them has something to hide?
5 Just do the ones in the DFW area, and now you've maybe whittled it down to 40 years at one a day. Again, just too massive.
6 Just do the ones in Ellis County only? Maybe. By the numbers, maybe about 400 of those cars. At one a day, working 5 days a week and with weekends off and 2 weeks for vacation, 2 years.
7 But do you need to meet each owner, to check the walk? One a day may turn into one a week now, and it's 14 years to just do Ellis County.
You get the idea. If I'm MPD, I might have a search run by the Texas DMV and get them to print a list of Ellis County owners of 2010-12 Altimas as of 4/8/2016, but it will take quite some time to go see them all, and no assurance the perp is even on that list.