Hi Andy,
Thank you very much for your message and in the last couple of years I did quite numerous cannons as well as horse-drawn vehicles.... 
Regarding your question on vehicles, I also collect WWII German ones and at present I have around 200 finished as well as around 400 untouched in their boxes....
Because the figs take me a lot of time, I had no time for vehicles and I have not built one tank or truck for more than 7 years.....
Still, I hope one day to start building again some of them...
Anyway, the next two sets I want to post include only figs, but the third will be a very dear topic to me, motorcycle and will feature BMW and Zundapp....
Furthermore, after that I wish starting reviewing a series of Panzer crews sets but for them I will use vehicles done by a friend of mine because my vehicles are less detailed than his and I don't want and have time enough to upgrade mine....
So in the next period, I think you will really have what to see in terms of vehicles....