Volvo V70 2.5T BiFuel

Hello dear Volvo municipality. I need your assessment. I just stumbled over the offer, where a Volvo V70 2.5T BiFuel with 231ps is offered in the summum equipment with 174tkm for 10.990€. Now I have read a lot about the different engine types but still nothing of a 2.5T BiFuel with natural gas. Would that be a good or recommended engine or rather not? My driving profile would be about 40 km to work and 40km back. And in the leisure time the car would be a uch a lot moves so that I come in the month on 1500km-2500km. Advantage would be with the one that one would bypass these diesel prohibitions in inner cities (even if it concerns only individual roads so far) Thanks already for hopefully many info