I was wondering if this car was number 20 for me on MBs. Turns out it was number 23. I'm losing track, so I wrote it all out here for my memory.
1: 85 500SL 2002
2: 85 300D 2007
3: 80 300TD 2008
4: 95 E320 2008
5: 83 300D 2008
6: 82 300TD 2009
7: 85 300TD 2009
8: 04 E500 2009
9: 85 300D 2009
10: 91 350SDL 2009
11: 76 450SEL 6.9 2009
12: 91 300SEL 2009
13: 95 E320 2009
15: 95 C36 AMG 2010
16: 91 560SEL 2010
17: 84 500SL 2010
18: 82 300TD 2010
19: 02 SL500 2010
20: 85 300TD 2010
21: 95 E300 2010
22: 80 240D 2010
23: 81 300SD 2011