More than 50 vehicles including a pre-war Aston Martin graced the car park and adjacent green at Holy Trinity Meole Brace in Shrewsbury for REVS 2017 last Saturday.
Bishop Mark said: "It may look like a church fete and a lovely day out but it is much more than that, actually quite serious".
The event, linked a monthly meeting which serves as both a car show and church service, was led by Holy Trinity's Rev Adam Gompertz and his team.
Bishop Mark went on to say: "Adam is trying to start a fresh expression of church based around his passion for classic cars - and it seems to be working."
"There are a lot of people here who are unchurched but have gladly bought their vehicles along. I've noticed that as I go along, they talk about their cars but then they talk about themselves and something of their spiritual journey too."
A Model T Ford, a 1957 limousine by Hawker Siddeley and 1970s classics such as Minis and Land Rovers was also among the vehicles present.
Other activities included crafts, a Lego car-building challenge, a Scalextric racing competition and a hog roast under the bell tower.
Speaking about the monthly Sunday Service Station meetings, Rev Gompertz said: "It's very early days - and this is a long term experiment - but it's about taking the time to build relationships and be where people are at.
"I am prepared for to be trying it for the long haul - and especially looking at things for the winter (often when classic cars get put away in the garage)."