▁wide ), ▁with ▁a ▁capacity ▁of ▁ 7 7 , ▁with ▁ 2 7 ▁se ated . ▁ ▁A ▁single ▁demonstr ator ▁of ▁the ▁hy brid ▁variant , ▁the ▁En vi ro 2 0 0 H , ▁was ▁produced ▁in ▁ 2 0 0 4 ▁and ▁entered ▁long - term ▁tri als ▁in ▁London ; ▁however ▁the ▁un con vent ional ▁engine ▁and ▁door ▁layout , ▁combined ▁with ▁the ▁collapse ▁of ▁Trans Bus ▁International ▁in ▁ 2 0 0 4 , ▁led ▁to ▁the ▁type ' s ▁commercial ▁failure . ▁As ▁a ▁result , ▁it ▁was ▁the ▁V DL ▁S B 1 2 0 - based ▁Wright ▁Elect roc ity ▁hy brid ▁electric ▁single - de cker ▁bus ▁that ▁was ▁ordered ▁instead ▁by ▁many ▁operators . ▁ ▁Following ▁the ▁collapse ▁of ▁Trans Bus , ▁the ▁En vi ro 2 0 0 ▁was ▁re brand ed ▁as ▁the ▁Alexander ▁Dennis ▁En vi ro 2 0 0 ▁by ▁Alexander ▁Dennis , ▁the ▁successor ▁to ▁Trans Bus . ▁Only ▁two ▁more ▁first ▁generation ▁En vi ro 2 0 0 s ▁were ▁built ▁following ▁the ▁collapse ▁of ▁Trans Bus , ▁one ▁dies el ▁and ▁one ▁hy brid ▁vehicle , ▁delivered ▁to ▁Far ▁East ▁Tra vel ▁of ▁I ps wich ▁in ▁early ▁ 2 0 0 7 . ▁This ▁pair , ▁and ▁the ▁original ▁London ▁demonstr ator , ▁have ▁since ▁passed ▁to ▁B uses ▁Ex c eter a ▁of ▁Gu ild ford . ▁ ▁The ▁first ▁generation ▁En vi ro 2 0 0 ▁was ▁offered ▁alongside ▁the ▁second