Bilexteriörbilder, bilbarnstolsbilder, bilinteriörbilder
+---------------------+
| Bilhandlare |
+---------------------+
/|\
/ | \
/ | \
+---+----+
| Köp bil |
+---+----+
|
+-----------------+
| Kunddata |
+-----------------+
|
+-----------------+
| Bildetaljer |
+-----------------+
|
+-----------------------------+
| Beräkna pris |
+-----------------------------+
V
+-----------------+
| Skapa faktura |
+-----------------+
/|\
/ | \
/ | \
/ | \
/ | \
/ | \
/ | \
/_______|_______\
