```py
from diffusers import UNet2DConditionModel, DiffusionPipeline, LCMScheduler

unet = UNet2DConditionModel.from_pretrained("latent-consistency/lcm-sdxl", torch_dtype=torch.float16, variant="fp16")
pipe = DiffusionPipeline.from_pretrained("stabilityai/stable-diffusion-xl-base-1.0", unet=unet, torch_dtype=torch.float16, variant="fp16")

pipe.scheduler = LCMScheduler.from_config(sd_pipe.scheduler.config)
pipe.set_progress_bar_config(disable=None)

prompt = "a red car standing on the side of the street"

image = pipe(prompt, num_inference_steps=4, guidance_scale=8.0).images[0]
```