Hi!
Well ... if the kit inside the box is the same as the boxart, we will get no Elefant which is the powerful 8x8 cross-country SLT but the 8x6 SLT called Franziska which differs from Elefant! The trailer seen on the boxart is the 56ton trailer which is used as well from Franziska and Elefant!
So lets hope that trumpeter a) did not mix Elefant and Franziska features into one vehicle and b) will bring an Elefant later with the other trailer.