ingen , ▁where ▁he ▁also ▁earned ▁a ▁Diplom ▁degree . ▁He ▁wrote ▁his ▁th esis ▁at ▁the ▁H ew lett - Pack ard ▁computer ▁company . ▁ ▁Da im ler ▁AG ▁ ▁In ▁ 1 9 8 8 ▁R ensch ler ▁joined ▁Da im ler - B enz ▁AG , ▁where ▁he ▁initially ▁worked ▁in ▁the ▁Organ ization ▁and ▁Data ▁Process ing ▁department . ▁In ▁ 1 9 8 9 ▁he ▁worked ▁on ▁the ▁staff ▁of ▁Mer cedes - B enz ▁Chair man ▁Werner ▁Nie fer , ▁after ▁which ▁he ▁managed ▁project ▁teams ▁at ▁the ▁Corpor ate ▁Pl anning ▁unit . ▁In ▁ 1 9 9 2 ▁he ▁was ▁Executive ▁Ass istant ▁to ▁the ▁designated ▁Board ▁of ▁Management ▁Chair man ▁Hel mut ▁Werner . ▁In ▁ 1 9 9 3 ▁he ▁was ▁appointed ▁to ▁manage ▁the ▁All ▁Activity ▁Ve h icle ▁( AA V ) ▁project , ▁whose ▁aim ▁was ▁to ▁develop ▁an ▁all - new ▁lux ury ▁SU V ▁and ▁to ▁select ▁and ▁build ▁a ▁corresponding ▁production ▁facility ▁in ▁the ▁U . S . ▁The ▁result ▁was ▁the ▁newly ▁developed ▁Mer cedes - B enz ▁M - Class , ▁which ▁has ▁been ▁manufact ured ▁in ▁T us cal o osa , ▁Alabama , ▁since ▁ 1 9 9 7 . ▁The ▁lux ur ious ▁SU V ▁defined ▁a ▁new ▁segment ▁and ▁was ▁a ▁market ▁success . ▁The ▁vehicle ▁has ▁also ▁been ▁delivered ▁to ▁customers ▁in ▁Germany ▁since ▁ 1 9 9 8 . ▁ ▁After ▁man aging ▁the ▁M - Class ▁unit