Devon & Cornwall Police say that they arrested a 32-year-old woman and a 29-year-old man on the hard shoulder of the M5 near Cullompton, Devon, after being called by the driver of a national Express coach.
The shameless pair, who reportedly met for the first time on the 10-hour journey from Manchester, had shed their clothes and got it on in full view of other passengers.
When the driver realised what was going on he pulled off onto the hard shoulder of the motorway and waited for police.
A police spokesperson said: “Police were called to an incident of public indecency on a coach travelling on the M5 near Cullompton at 10.40pm on Monday March 4.
“Officers located and arrested a 29-year-old man from Bristol and a 32-year-old woman from Barnstaple on suspicion of an act of outraging public decency.
A ticket for the Manchester to Exeter ride costs around £47.
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