"So the sled device just requires an entirely new parking garage to be feasible....?  Seems easy enough..."

"This is actually quite large and heavy for this product.  Muc-Off makes one that is 1inch shorter and half the weight. Definitely would not want to carry this around in my jersey pocket all day...  "

"Pretty sure a zero energy system is fundamentally impossible. "

"Doesn't it burn more energy moving the sleds up the hill than they produce moving down the hill?  "

""Worry Free Plastic" might be the new buzz-word for green washing."

"  A common split key ring runs about $2.  It's silly to compare the two objects if one costs more than 10x the other.   I can buy a top-end Petzl climbing carabiner for $25 that holds a car and has magnetic locking feature..... I'm all about good industrial design but this is some overpriced nonsense.  "

"Do you drive your car with every seat occupied at all times?"

"So it's a giant iPad?"

"I could not imagine trying to reverse a double-hinge trailer....."

"$185 for hollow metal tube with a hook on the end?"

"Also, Eames would puke at an $800 concrete ashtray......  https://concretecat.com/collections/all/products/octavia-max-28That's almost the same price as a full Eames low molded wooden chair! GTFO...."

"Please do not call them the "Eames" of concrete.  Accentuating air bubbles is not groundbreaking.  This is 98% form for the sake of form, 2% function. They've even paired with an overpriced celebrity weed company to help sell product.   Eames solved problems to help people. I don't see a single "problem" being solved here.  Sorry for the rant but a site like this should have more respect for real designers. "