Interesting!  I knew that routine maintenance can be done anywhere.  I
asked the local Toyota service department if they could do warranty
work on a Lexus, I asked the same of Honda about Acura.  They both
said routine maintenance yes, warranty no.  Do it yourself is probably
not the answer since warranty work usually entails some new part that
must be replaced that would require a trip to the Lexus dealer.

That is not quite the case.  Warranty work can be done by another shop in an
emergency, but the vehicle owner has to pay the other shop and retain any
parts that were replaced and submit the receipt and used parts to a Lexus
dealer for reimbursement.  An emergency would be defined as a vehicle that
will not operate or is dangerous to operate in a location too far to tow or
that is repaired when the closed dealer is closed.  All emergency
reimbursements are through a dealer, not directly from the automaker.  If
the dealer and/or automaker's rep finds that the parts were not defective or
if the repair does not solve the condition, the owner will not receive
reimbursement.  If non-OEM parts are used in the repair, the automaker will
not warranty any further problems with the parts.

Also, some repairs require district service manager authorization, even when
done at a dealership.  It will be difficult to get reimbursement for those
repairs if the customer did not contact the automaker's or dealer's customer
service department first.

The OP should purchase a car from an automaker with a dealer that is a
reasonable travel time and distance from his home or work.