The other option is a 2-d barcode on the road or on a sign in a position that the car can read it. That barcode leads to a URL with a machine-readable map of the drive-thru. Naturally such a sign and URL is maintained by the restaurant and the car's systems can read and understand the content.
Awesome, if you ask me.
This was discussed in a past patent mentioned on HN.
Good idea, but probably can't be relied upon given liability issues (in addition to the whole "print wrong barcode and sabotage restaurant with crashing cars thing).
Awesome, if you ask me.
This was discussed in a past patent mentioned on HN.