Pure Speculatio, but why not diesel in the Cali

Last time I discussed this with a few friends… but quite honestly that would not be so absurd.. to plant a nice self-tanner to a Cali…see current 150hp ler in the Astra of the Cdti runs there from 0-100km/h 8.9 sec…and 210 peak at a sdamt consumption of 5.8 l. and a torque of 320 NM in series.. .Gigantic,what if one crafted a bisel,anything would be possible…and under ecological aspects the Cali 1a would be the low CW value the consumption yes a you would reduce even further and the V-Max can rise ,ergo… But these are only thought-courses, which actually everything in reality can be required to implement this… purely hypothetically….or there are people who have done that already..