Well well... it seems that semi-trucks will be populating route 666 at launch after all.
As all the cars they come in different flavors. You will also be able to blow up their trailers separately. As far as difficulty goes, they offer a nice change of pace but they're far from being bad news. They fit right in with what we already have.
There is a good chance that this won't be the last good news before the 21st.