Spain has warned that it is ready to impose a new border tax...
..."Specifically on this issue of border fees, the Spanish have not raised the prospect of introducing border fees with us. We are seeking an explanation from them regarding reports that they might target Gibraltar with further measures."
The [foreign] minister [José García-Margallo] suggested a €50 (£43.40) fee could be imposed on every vehicle entering or leaving the territory..Such a fee would be a punitive cost on residents who regularly commute to Spain for work.
Maybe Israel can learn from the EU?