Now, with lightning bolt technology. Woodward Avenue, south of 13 Mile Road, Royal Oak.  ¶ 1:15 PM

 
Twins. Woodward Avenue and Palmer Street, Detroit.  ¶ 1:13 PM

 
...and who doesn't want precise hair? Woodward Avenue and 9 Mile, Ferndale.  ¶ 1:05 PM

 
Logan's Run. Renaissance Center, Detroit.  ¶ 1:37 PM

 
TRTL's got a posse. Woodward Avenue, south of 7 Mile Road, Detroit.

Related reading:
"Writing on the Wall" by Heather Kevnick, Real Detroit Weekly
"Turtle Drawings Deface Detroit Landmarks," Local 4 News
"Graffiti: Turtle Mania" by Patricia Montemurri, Detroit Free Press
"Turtls, Trtls, Trdls everywhere" by Jacqui Richards, highestwire.com
"Artist Cashes in on TURTL Graffiti" by Ben Schmitt, Detroit Free Press  ¶ 12:57 AM

 
Good advice. Woodward Avenue and Fisher Freeway, Detroit.  ¶ 12:13 AM