Being a former CPA, CFO, VP Finance, etc. and knowing what I do about GAAP, I really doubt they can count cars in the factory parking lot as revenue. They might be able to count them in production numbers and they will, most likely, be sitting as inventory (WIP, most likely) on the balance sheet.
At this point though, production and order book are probably more important. Analysts will use both to drive their models. The wild card will be the rate they convert production to revenue, hence the WIP and how long it sits there.