Info on Mithraism in that piece is pretty dubious from what I know. Mithras may have been seen as competition for Christianity but the exactly details of the cult are not known with any strong degree of certainty. Looks like someone just wants to show that Christianity is not that unusual.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13