Coincidentally (unless they read this forum) that was a 'factoid' on radio 2 yesterday afternoon!
Re: Aston Martin and Mercedes, the latter (using AMG division) are collaborating with AM on future road car engines, so they are already close. The next AM V8 will be likely a joint effort, although according to the motoring press a new V12 will be pure Aston. I may be mistaken, but thought Merc had bought a share of AM as well..... Edit- 5% Daimler owned according to quick search.
Personally, I would rather see Aston in GT racing than F1!