Here's the space for the correct pairings:
#1 Buffalo buggy driven at Neige et Glace 1973 by Guy Fréquelin - #4 Opel Manta B Guy Fréquelin (Julien1A)
#2 Bell Aurens Longnose -#29 Langnese (Longnose) ice cream cart (woodinsight)
#3 William Alexander's painting of a Drive-In Church -#20 William Alexander's Ice-Cream Truck sculpture (woodinsight)
#5 Andros island, Greece - #23 Trophée Andros electric ice-racing car (Tom_I)
#6 Hansa-Lloyd electric truck - #17 Treff-As-Wagen, built by Hansa-Lloyd (pnegyesi)
#7 Zündapp KS 750 tricycle Ortiz - #11 Renault 4 CV Ortiz (pnegyesi)
#8 Henschel-Doble steam truck - #19 Paso Doble ice dance (Tom_I)
#9 VW Golf "Fire and Ice" -#21 Roger Moore in "For Your Eyes Only" (Tom_I)
#10 Innocenti/Lambretta Lambro - #30 pop festival at Parco Lambro, Milan (Tom_I)
#12 Seat Panda Terra - #27 Foremost Ivan the Terra Bus (Tom_I)
#13 Moto Guzzi Ercole (Hercules) - #22 Hercules Petroleum Oil Co (pnegyesi)
#14 Galtier-Renault - #18 - Dolo JB-20 constructed by Ets. Brun, Dolo, Galtier et Cie. (woodinsight)
#15 Otto Mathé's delivery bike - #25 Otto Mathé in his Fetzenflieger at a skijöring (pnegyesi)
#16 Fiat 1100 I Camionetta by Savio - #28 Fiat 1100 I Gelateria van (woodinsight)
#24 Midland c.1910 -#26 Midland Counties Ice-Cream van (woodinsight)