Other mistake: Michael states that he and Jan have traded in their two cars for a Porsche (for her) however from earlier episodes we know that Michael's Sebring is a corporate lease.
Revealing mistake: Michael is on his computer trying to open up PowerPoint in front of everyone in the conference room. He says "what we have to do here is go to run" and he clicks the run icon. However on Windows XP (the version he is using) and all other versions of Windows, clicking "Run" would open a separate window where you would type the name of the program. However, what appears on screen is a context menu as if he had clicked the "All Programs" button. You can even see the highlighted "All programs" button indicating that it was actually pressed. They likely had a PowerPoint presentation running in full screen with screenshots of a Windows desktop on each slide. As Steve clicked arbitrarily on the screen, it would trigger the next slide to appear thus creating the illusion that he was interacting with the operating system. (00:19:16)
Suggested correction: He's only saying it's a corporate lease to egg Dwight on cause he tricked him into thinking he got the manager position over Michael when Dwight tells Jan he could run the branch better in the waffle house, but right after screams "That's my car!" several times.
When he hit Meredith with his car he started it was a corporate lease again though.
Yes, he tells Ryan the accident occurred on company property, with company property so... Double Jeopardy they are fine. To which Ryan says, I don't think you understand how jeopardy works.