Those are valid questions. Why has he lied about how his car got damaged? The answer seems pretty clear that if he felt the need to lie what was he covering up?
My thoughts exactly people get in minor accidents all the time, so why did he need to lie about it? Well we know because so far anything involving Christina missing he's lied about and then some. Didn't know her that well, didn't offer to walk her to her car, he was just walking to his, he didn't talk to her while walking, he didn't call HF after she went missing, he didn't park in the same garage, he didn't talk to her at apartment that much or the entire night per say (wonder if those present saw that scenario different). Those are things him and LE have casted some flaws on.
Can't wait for them to prove she was in his car, which he said she wasn't. Can't wait for them to possibly be able to pull phone records and show who some of his last calls were too, and see that he did call others after stating he didn't.
Can't wait for them to find evidence of what he hit with the car, and prove it was not his fist that caused that damage and when that comes back we'll definitely know his bodily injuries didn't come from changing a tire (which has already been speculated by body shop that he couldn't have damaged the car in that manner).
We have got to find that evidence. I wasn't able to search today due to sick hubby, but it's killing me not being able to participate and find these answers.
I know many are not in a position to help locally, those helping where you can and posting good ideas, theories, and productive possibilities with good clarification are very helpful to the case.
We have to find the missing pieces to this puzzle and when your putting a puzzle together that's almost finished, you don't get out a different box/puzzle and try to fit those pieces into the current puzzle. It's more simple than that.
If we get to the very end and we are missing that one piece it makes it even more frustrating and then we are left with no option but to start a new puzzle, and pray those pieces all fit.