Congratulations, you've identified inflation. Now, if those things you bought were the same things then as they are now, you might have a point.
1. That new car? Back then, it had an engine, a manual transmission, some seats and some tires. If it was hot, you opened the windows, and if you wanted to drink a beer, you held it. Today it has multiple new safety systems, air bags, the engine and exhaust system have multiple emissions reducing technologies built in, the transmission shifts more efficiently than you could slam that 4 on the four, it has air conditioning with multiple comfort zones, heated seats, many cup holders, multiple phone charging ports, BlueTooth connectivity to said phones, a GPS system with automatic help call capability, lane tracking ability, adaptive cruise control, need I go on? All of those things cost money.
2. That gasoline? Back then, it came from Texas and Oklahoma, was easy to find, easy to pump, easy to transport and there was plenty of refining capacity. Today's gasoline, OTOH, is harder to find, harder to extract, comes from volatile countries that love to control supply to keep prices high, has to be transported around the world, and we haven't built a new refinery in decades. Apples to oranges.
OTOH, a color TV back then would cost you around $3300 in today's money, while you can pick one up for a $100 at Walmart today. You couldn't even buy a cell phone then. If you wanted to make a call from your car, you could do it for $4,000. Today you can get a phone with more processing power than the Apollo missions carried.
So, the point could very well be made that the Baby Boomers got the short end of the stick. When was the last time you pulled out a paper map, unfolded it and tried to figure out where you were? When was the last time you put money into a machine to make a call?