Politicians, in particular, but many other people use "grow" incorrectly, eg Some say "We will grow our economy...!"

I would like to ask the opinions of Mudcatters on the use of an "R" sound between a word that ends in a vowel and one that commences with a vowel, such as "Aston Villa (r) are the new Champions. Is this a correct figure of speech ?? I've even heard "I saw (r) him do it" ???