Theme: TomTom for 1/3/13. There are also a few interesting and unusual logical deductions to be found.
Answer String: Enter the 2nd row from left to right, followed by a comma, followed by the 6th column from top to bottom.
Time Standard: TomTom Master = 4:30, Expert = 13:30, Novice = 45:00
Note: Advice on solving this puzzle has now been posted in “Ask Dr. Sudoku #1“.