7.58pm BST Waiting for a tram Marcel and the boys are waiting for Thor's anger to abate, and for the tramway cable car to reopen - they surely can't pass up the chance to see the Continental Divide.
The neighbouring mountain, Medvednica, also comes into its own, with its small ski centre (4km of varied slopes: pp-medvednica.hr), just a half-hour's journey by tram and cable car from the centre.
Enter the field on the tram line.
They worked behind the scenes to take out all and any competition to the personal automobile and the combustible engine, killing trams and cable cars in cities while lobbying for federal funds for highway construction.
From there a cable tram ran on narrow gauge rails up the hill to a gully close to the building site.
A short distance away, a crew is constructing an aerial tram from which four cable cars will glide like tropical ski gondolas through the tree canopy.
A tram and two more cable-car lines are being built, connecting poor districts in the city's east.
For me, the public transportation system of a new city is a mystery that always brings a surge of feeling of triumph once you figure it out; add to that the peephole on local life that public buses and trams and subways and cable cars can provide in places as diverse as Beirut, Oslo, St . Petersburg and Medellín and you know why I have a no-taxi policy.
The tram lines and overhead cables stretching down the receding and empty streets emphasised Struth's preference for central perspective (which, as John Berger had explained earlier in the decade, causes the visible world to converge on the eye of the spectator "as the universe was once thought to be arranged for God").
To this aim, two LEGO Mindstorms NXT robots are attached to a hanging cable and behave as trams (indicated as Tram-R and Tram-L, where R and L stand for right and left), endowing MN1 and MN3 with mobility capabilities.
