Greenough showed the effects of enriched and deprived environments on cortical connectivity and thickness in a series of studies. This is one of his early studies:
Science. 1972 Jun 30;176(4042):1445-7. Rearing complexity affects branching of dendrites in the visual cortex of the rat. Volkmar FR, Greenough WT.
"Higher-order dendritic branching is considerably greater in Golgistained neurons from the occipital cortex of rats reared in groups in a complex environment than in similar neurons of littermates reared individually in laboratory cages have intermediate amounts of branching, while lower-order branching did not appear to be affected by any rearing environment."
Telsa is planning on an ~$30,000 model in the next few years. If they achieve this price point and maintain the quality of their current models, I think that they will have an all electric car that many people will want
If in any problem you find yourself doing an immense amount of work, the answer can be obtained by simple inspection.