Cops in Boston can/do pull people over for no front license plate. Some people I know have it in their front windshield. I just use the tow hook bracket.
2002 330ci Titanium Silver / Gray
2005 X5 3.0i Black Sapphire Metallic / Black
2002 M3 Laguna Seca Blue / Black
2001 M5 Jet Black / Black