Nice move, can I do that with some Fish 'n' Chips?
I fear that anything more than a very occasional use of this technique would lead to all sort of issues with the time that a train pauses in a station, and there's a potential effect of the safety of station operation
On the other hand, car travellers often have the option of stopping at a motorway services for dinner (although on the Manchester trips this year by car, there was nothing much between Oswestry and home (in Pembs.). On train dining would therefore be an advantage of rail travel, saving journey time by eating on the move, though in cases of short trains early/late openning full-dining facilities at stations might be the more feesable option.
We could also have all trains stop for a meal break during longer journeys - long distance coaches do it already, and I believe at one time it was proposed that all trains stop for at least 10 minutes at Swindon to allow people to get / buy refreshments - in fact I think the propel was actually implemented for a time
Full marks for enterprise to both pax and the delivery company. I notice in the picture with the article, the table is extremely greasy and as I guess it was its last journey of the day, I imagine that the train got a good clean. I wouldn't want to sit there next day with stale garlic and dead pepperoni wafting into my nostrils
(chose 'cheesy grin' smiley for its food connotations).
But there's no difference in table grease quotient for a pizza delivered in through the door at Newport and one purchased at or near Paddington station and taken onto the train by passengers.
It's very interesting to see the starkly different rules here between First (bus) and First (train). On trains, by all means take your own food and drink [except alcoholic drink on the last train off Weymouth]. On buses, you can be threatened with arrest for even drinking water, and indeed that's happened to one of our members I recall [again, exceptions. It's OK if you're pregnant]