Taxi to airport

What you are suggesting and offering is totally illegal even if you had permission to work in Spain. 

You are breaking the law and enticing other people to do the same by using you and your car. If you have an accident and people are injured you are not insured, if you breakdown what is your back up to get people on time for their flights or collection? What happens if the police stop you and confiscate your car and fine you and your passengers?

Taxies pay a lot of money to obtain a licence especially if they are entitled to pick up and collect from airports or indeed any other locations. and they are fully insured.

If you are bored offer your service to a charity or if you cannot afford to stay in Spain without working either do it legaly or stay at home. 

Not sure what rubbish you are talking about.  I have no interest in charging for my services, just want to keep active.   However, i have asked my insurers/brokers to advise and waiting for their response. When i called they had never been asked the question   Anyway, you really had jumped the gun, your message was un-called for, however after checking up, i have been told that you are a poor sole.  So perhaps you could find something else to do to keep you active, rather than using this forum to be rude and insulting.    However, many thanks for showing everyone on this forum your true colours. 

I am pleased you checked  about me, where I would not know?  you may have noticed am classed as a helpful member for many years, therefore people are aware of my true colours as you say.

Other people on this site have Al's pointed out to you its illegal and suggested you try charity work.

As I have lived in Spain for over 25 years  I don't find myself getting bored or indeed advertising services I couldn't fulfill legally .

I would also suggest instead of asking your Insurance company you check the Spanish gov website.

Have a good holiday.