This page covering both racing at Charterhall and known vehicles driven by Jim in 1957 is not fully populated at present however the following is significant.
16th May 2015 at the Jim Clark Room. Peter Windsor interviews Ian Scott-Watson in front of his old Porsche 356A 1600 Super
New Year banter from the 1958 BMRC Bulletins
From the report above it appears Ian Scott-Watson only acquired his Porsche on the night before the racing which explains why there is no programme entry.
ENTRY LIST NOT FOUND
UUL 442 back at Charterhall on 16th May 2015. LINK to YouTube video of the visit.
The owner of UUL 442 was invited to follow the very first production Porsche 356-001 in the 2018 Goodwood Festival of Speed Porsche 70th anniversary celebration YouTube LINK
REPORT AND RESULTS FOR AUTOTEST NOT FOUND
Knockhill 24th August 2014 : Celebration of the 50th Anniversary of Jim Clark’s British Touring Car success.
Another CSH 599 Goggomobil at the 2018 Bosch Hockenheim Historic Jim Clark Revival
News in December 1957 however for sale twelve months later in 1958. The car is even mentioned in the "Complete Official Triumph TR2 & TR3 Service Manual" published by Robert Bentley Inc. in Massachusetts as shown below.
Taken as a whole, the Triumph TR2s and TR3s represent one of the most successful sports car designs in history; so successful that, by the early nineteen-sixties, they had helped to make Standard Triumph the second-best selling imported car marque in the United States. During the late nineteen-fifties and early nineteen-sixties, countless fledgling race drivers gained their early experience in these machines. Among them was three-time World Champion Jim Clark, who owned one of the first-if not the very first-TR3 in Scotland