I think this '41 Cadillac has a cool look, Tucci hot rods built it, and put in a 500hp Northstar engine

I just learned that Tucci Hot Rods made it to the Ridler great 8 with their 1935 3 window Ford back in 2009. That is high level perfection.

http://www.tuccihotrods.com/home.html

few prototypes and concept cars are coming up in emails that I haven't seen before, but Randy found one with some previously that I had never seen

coincidentally this 1948 Cadillac Series 62 by Soutchik was just the car in a 2012 calendar that a coworker has... and I was going to look it up. Now I don't need to!

this car was in the Imperial Casino car collection/ museum http://vizlepcso.blogspot.hu/2008/07/auto-collections-tizenhatodik-rsz.html

 1953 Cadillac by Ghia... the Rita Hayworth car
it has an interesting history http://justacarguy.blogspot.com/2011/03/1953-cadillac-series-62-rebodied-by.html and the color in daylight is closer to purple.

1955 Lincoln Indianapolis

1956 Oldsmobile Golden Rocket had an interesting design for a steering wheel. the spokes are at one side. Looks like maybe the speedometer was in the center of the steering wheel too... imagine how far that steering wheel would roll up toward the roof

1957 Chrysler Diablo by Ghia

Eldorod, once built at Hot Rods by Boyd, the new owner had Chip Foose make some finishing touches and upgrades

The 1948 Cadillac was named the "Eldorod," it was the first car designed by Foose for Boyd Coddington's hot-rod business. The striking example of post-war luxury wears a custom shade of deep blue from BASF, and the car was a highlight of the paint company's stand at SEMA.

It features bumpers from a 1956 Chevrolet Nomad and the grille opening of a mid-'50s Oldsmobile. The fenders, window lines and hood were reshaped. The convertible top, elegant in a soft white, was reskinned in Mercedes canvas.

 Initially, some of the more elaborate cues were left out of the Eldorod in an effort to deliver it on time to the client.
 info from  http://www.autoweek.com/article/20121101/sema/121109968

the owner of this Caddy won the "Best of Show" at Pebble Beach in 2012 with a 1928 Mercedes bodied by Soutchik. he knows great cars, and perfect craftsmanship

Cadillac ULC prototype at the Art Center College Car Classic

ULC stands for Urban Luxury Concept

Designed at GM's North Hollywood Advanced Design Center under the direction of Frank Saucedo, the ULC purports to be a baby Cadillac with a smaller-than-usual footprint, plus lots of room inside and a frugal hybrid powertrain under the hood.

Cadillac CTS-V Coupe by Hennessey

Hennessey has unveiled a new performance package for the Cadillac CTS-V Coupe.

Dubbed the V1000, the car features an aerodynamic carbon fiber body kit with a ventilated hood, a front splitter, a rear diffuser and aggressive side skirts. Other highlights include a lowered sport suspension, Brembo carbon ceramic brakes and a bespoke interior with premium leather upholstery and an Alcantara headliner.

Power comes from a twin-turbo 427 LS V8 which has been outfitted with high-flow cylinder heads, a new crankshaft, upgraded fuel injectors, an intercooler and a revised ECU. Thanks to these tweaks, the engine produces 1,000 hp (746 kW / 1,014 PS) and 950 lb-ft (1,286 Nm) of torque. This will reportedly enable the car to accelerate from 0-60 mph in 3.5 seconds, run the quarter mile in 10.9 seconds and hit a top speed of 230 mph (370 km/h).

Production will be limited to 12 units, but there's no word on pricing.

Cadillac CTS-V by Cam Shaft

German tuner Cam Shaft has unveiled their new styling (barely) and performance package for the Cadillac CTS-V.

To give the car a European flair, the CTS has been outfitted with a matte-white wrap (€2,250) and matte-black painted accents (€3,250). According to the company, these changes give the car a more "selective" appearance that mimics a stealth bomber (if it were white).

Under the hood, the 6.2-liter V8 features a larger air intake, a revised ECU, and a Wait4Me supercharger kit (€3,250). Thanks to these tweaks, output climbs from 564 PS (415 kW / 556 hp) to 630 PS (463 kW / 621 hp).