Mistake was not having contact details on the back - rectified that now 
Cheers
Ian
you do not have your website address on there yet you freely advertise yellow pages "I throw that straight in the bin, quicker looking online :
your telling people to look in the yellow pages I hope your the only one in there or you would be helping every other window cleaner in there (just a thought) 
hope your website address is on your yellow pages add.
apart from that think the van looks very good
cant really mistake what you do for a living 
Ian:
"Contact Details" includes the web address

Having said that we get very few enquiries via the website (I have a dedicated e-mail address on there so I know if any e-mails are through the site)
Most people phone up and say "I saw your van...."
Now, people don't get time to write down phone numbers, let alone web addresses as our vans speed by :

So: I put "Look in Yellow Pages" because people
can remember that, and they do. OK, I may be directing them to other window cleaners' ads, but the one they recognise is mine.
How do I know? Because they phone me :

:

We get about 10 - 12 enquiries every week over the phone and as far as I'm concerned "the proof is in the pudding"
I've had 3, yes, only 3 e-mail enquiries via my website in a year.
Cheers,
Ian