Yep. They made damn sure there wouldn't be any evidence.
Well, if that is how you want to view things then you’ll just see a conspiracy around every corner. Evidence for a conspiracy? There’s a conspiracy! No evidence for a conspiracy! There’s a highly sophisticated conspiracy that covered up all the evidence!
See how that works?
I heard there was a molar that was almost identifiable and some loose change that wasn't totally melted.
I'm sure this kind of vehicular fireball is quite common. Especially when rigged with enough explosive to blow up a small WWII tank.